ASTROSAT CZTI

Data Quality Report

Orbit 09207

Creation date: 2024-06-27T15:42:42.239731
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C02_042T02_9000001284_09207cztM0_level2.evt modeM0/AS1C02_042T02_9000001284_09207cztM0_level2_quad_clean.evt
Size (bytes)553,014,72060,929,280
Size527.4 MB 58.1 MB
Events in quadrant A4,231,725346,769
Events in quadrant B3,196,200368,602
Events in quadrant C3,008,868358,119
Events in quadrant D5,883,060330,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164822
B0132751
C0129581
D0216711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63082864.533925%
B6308761.204819%
C6308440.697527%
D630898715.646798%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7468 6309 178 178 2.38% 2.82%
B 7468 6309 0 0 0.00% 0.00%
C 7468 6309 0 0 0.00% 0.00%
D 7468 6309 869 869 11.64% 13.77%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 5 16 518420 3280.03 779 765 157.8
A 8 5 462370 2924.88 779 765 157.8
A 1 162 120543 758.95 779 765 157.8
B 8 234 57049 370.27 795 778 152.0
B 4 80 25722 164.14 795 778 152.0
B 12 111 16456 103.16 795 778 152.0
C 3 233 20767 112.71 765 768 177.4
C 13 61 5764 28.16 765 768 177.4
C 8 222 3663 16.31 765 768 177.4
D 9 64 2345592 12672.88 722 701 185.0
D 4 95 420980 2271.38 722 701 185.0
D 1 52 275377 1484.48 722 701 185.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter